CLADINOX INTERNATIONAL LIMITED
CLADINOX INTERNATIONAL LIMITED Patent applications | ||
Patent application number | Title | Published |
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20140037979 | METHODS FOR THE PRODUCTION OF CLAD STEEL PRODUCTS - A method is disclosed of producing a billet which can be heated and rolled or otherwise worked with conventional equipment to form a product with a steel core and a cladding of an alloy including stainless steel, nickel-chrome, nickel-copper or copper-nickel. For a product such as corrosion resistant reinforcing bar, the billet includes a solid steel core inserted in a tube of the alloy on which swaging operations are carried out, decreasing the transverse size of discrete portions of the tube. The part of the tube interfacing with the steel body may be swaged, increasing the length of the tube and decreasing the transverse size of the steel body at the interface. To prevent oxidation of chrome and other metals in the tube, one or more briquettes of scavenging metal are inserted in the parts of the tube that project clear of an end of the core. | 02-06-2014 |
20120202088 | CORROSION RESISTANT METAL PRODUCTS - A billet includes a solid steel body and an alloy cladding. The cladding may include a square tube in which the body is inserted with an interface at which the cladding becomes bonded to the body when the billet is heated and rolled or otherwise worked into a ferrous product. At least one element composed of a mass of finely divided scavenging aluminium, titanium or magnesium, is placed in the tube adjacent the body and separate from the interface. The elements are advantageously compressed into briquettes which scavenge oxygen from residual air at the interface to prevent oxidation of the cladding at the interface. The tube may be closed to prevent gases outside the billet from penetrating to the interface. Alternatively, reliance may be placed on the briquettes to scavenge oxygen from the residual air and also from atmospheric air and furnace gases before they can penetrate to the interface. | 08-09-2012 |